albertcardona, to random
@albertcardona@mathstodon.xyz avatar

Mason bee, Osmia sp.

Seen this morning at , Cambridge, UK.

albertcardona,
@albertcardona@mathstodon.xyz avatar

I had no idea:

"The nesting habits of many Osmia species lend themselves to easy cultivation, and a number of Osmia species are commercially propagated in different parts of the world to improve pollination in fruit and nut production. Commercial pollinators include O. lignaria, O. bicornis, O. cornuta, O. cornifrons, O. ribifloris, and O. californica. They are used both as an alternative to and as an augmentation for European honey bees. Mason bees used for orchard and other agricultural applications are all readily attracted to nesting holes – reeds, paper tubes, nesting trays, or drilled blocks of wood; in their dormant season, they can be transported as intact nests (tubes, blocks, etc.) or as loose cocoons."

https://en.wikipedia.org/wiki/Mason_bee

alex, to random
@alex@social.alexschroeder.ch avatar

I love our solitary bees. In the late morning hours when it’s still cold they sit at the opening of their tubes, looking out, warming up, trying to find the inner strength to get up and start doing things and I can relate so much.

albertcardona,
@albertcardona@mathstodon.xyz avatar
minouette, to random
@minouette@spore.social avatar

My lino print with collaged Japanese washi papers on a white mulberry leaf paper with bark inclusions shows blossoming cherry branches & two of our wild, native bees: the bumblebee (Bombus impatiens) and the Blue Orchard Mason Bee (Osmia lignaria). I printed it by hand on Japanese kozo (or mulberry paper), 16” x 20” with various collaged Japanese washi papers for the blossoms, bee bodies and wings.🧵

albertcardona, (edited ) to random
@albertcardona@mathstodon.xyz avatar

The bee parasites are out en force. Blood bees, nomad bees, and worst of all, the bee body snatchers: conopid flies. It’s tough to be a busy bee minding your own business…

Nomad bee, Nomada sp. http://www.inaturalist.org/observations/208316668

Blood bee, Sphecodes sp. http://www.inaturalist.org/observations/208306622

Conopid fly, Myopa vicaria http://www.inaturalist.org/observations/208307362

Conopid fly, Myopa sp. (update: not ferruginous bee grabber, Sicus ferrugineus) http://www.inaturalist.org/observations/208316797

alexwild, to random
@alexwild@mastodon.online avatar

Found this sleeping Nomada bee yesterday, clamped to a yaupon holly leaf. Those eyes!

albertcardona, to uk
@albertcardona@mathstodon.xyz avatar

The male hairy-footed flower bee, Anthophora plumipes, resting on a leaf.

http://www.inaturalist.org/observations/203233211

albertcardona, to greece
@albertcardona@mathstodon.xyz avatar

Every reference photo of the leaf-cutter bee Megachile roeweri at was unwittingly contributed by me. Thanks to the identifiers for picking up the species; makes my memories of last year's Crete Drosophila neuroscience meeting even sweeter – all are observations from the grounds around the Crete Orthodox Academy at Kolymvari, Crete Island, Greece.

https://www.inaturalist.org/taxa/433924-Megachile-roeweri

albertcardona, to random
@albertcardona@mathstodon.xyz avatar

Andrena niveata, a micro-mining bee. With two beautiful white bands on its face.
https://www.inaturalist.org/observations/165385974

Turns out I unwittingly reported, one year ago almost to the day, the only observation in the UK, and one of the 4 observations in the whole of Europe, the other 3 being in Belarus. Thanks to the anonymous iNaturalist identifier for the ID – I had only narrowed it down to subgenus Microandrena.

albertcardona, (edited ) to uk
@albertcardona@mathstodon.xyz avatar

Spring in
A few observations among many, all within about 15 minutes of crouching down by a single flower bush, today.

Lispocephala brachialis fly, in brown-resdish and blue colours.
http://www.inaturalist.org/observations/201271797

Hairy-footed flower bee, Anthophora plumipes. A male, in gorgeous yellowish-orange fur.
http://www.inaturalist.org/observations/201272424

Ichneumonid parasitoid wasp, its antennae as long as its whole body.
http://www.inaturalist.org/observations/201272499

Oxytelus sp. rove beetle, its silky wings unfolded.
http://www.inaturalist.org/observations/201272638

Heskie, to gardening

A question to gardeners. Have you noticed any changes in your garden because of climate change. Are you planning or planting or doing anything differently in you garden because of climate change. (Examples in the UK: grass mowing later in year and aphids appearing earlier). (I just asked this on Bluesky also).

albertcardona,
@albertcardona@mathstodon.xyz avatar
minouette, to random
@minouette@spore.social avatar

I am starting with this Eastern Snail Shell Mason Bee (Osmia conjuncta), a small North American blue bee which makes nests in suitable empty snail shells! In my linocut I show this adorable little pollinator with a Cepaea shell. Each print is 8” by 8” on delicate Japanese kozo (or mulberry) paper. I am truly charmed by the idea of a snail shell nest!

minouette, to random
@minouette@spore.social avatar

Why enrich a billionaire when you can buy something handmade? I’ll even put things in minouette.etsy.com on sale until November 30!

Like these leaf cutter bees for instance….

albertcardona, to random
@albertcardona@mathstodon.xyz avatar

An Anthophora curta napping on a rock by the beach in Isla Vista, in Santa Barbara, California, this past Summer 2023 while visiting UCSB. Its silvery colours and large green eyes are captivating.
https://www.inaturalist.org/observations/173683325

albertcardona,
@albertcardona@mathstodon.xyz avatar
bumblebeeconservationtrust, to random

A log-turning revealed this rare glimpse of a Buff-tailed bumblebee queen in hibernation👑💤

If you accidentally disturb a hibernating bumblebee, gently cover her back over with the same material that she had dug into and leave her be. Find out more👇🏿

https://www.bumblebeeconservation.org/beethechange/blog/how-to-help-hibernating-bumblebees/

albertcardona,
@albertcardona@mathstodon.xyz avatar

@bumblebeeconservationtrust

Despite being in hibernation, this queen bumblebee still managed to lift the middle limb, the typical defence response? Makes me wonder just how deep bees sleep, or whether they can wake up rapidly as need arises.

canyakker, to random
@canyakker@mas.to avatar

The goldenrod flowers are gone now, so are the bees.
I think this is a Cellophane Bee (Colletes simulans). They are solitary and build their nests in the sandy ground in the garden.

albertcardona, to random
@albertcardona@mathstodon.xyz avatar

Large body size differences across species in Hymenoptera. Here, an example of a small masked bee (~7 mm) next to a minute ant (<3 mm) on a flower of European sea rocket (Cakile maritima). https://www.inaturalist.org/observations/120155371

And these two are both tiny next to a violet carpenter bee (Xylocopa violacea), measuring well over 40 mm in body length! https://www.inaturalist.org/observations/178658335 Similarly dramatic size differences exist within ant castes of the same species.

A very large bee, an entirely black violet carpenter bee, foraging on dry-looking pale yellow thistle flowers.

firephoto, to Bloomscrolling
@firephoto@mastodon.social avatar

Bumblebee on a marigold. Probably Half black bumble bee - Bombus vagans.

twizzt, to colombia
@twizzt@sauropods.win avatar

Happy
I haven't posted for a while again. Life is crazy. So here's a fly I know nothing about. My guess is it's a hoverfly in the genus Quichuana (rat tailed maggot fly) but don't really know. I wonder if it is mimicking a Ceoloxys bee. It even has the hairy eyes.

albertcardona,
@albertcardona@mathstodon.xyz avatar

@twizzt There are also leaf-cutter bees, like Megachile albisecta, that look like this fly—why would it mimic a bee though?

https://www.inaturalist.org/observations/178659176

minouette, to random
@minouette@spore.social avatar

For the prompt “metallic” my linocut Osmia lignaria, the metallic blue orchard mason bee.

We think of bees as living in hives, but these bees live in reeds or natural holes which they divide into chambers with mud walls. We also tend to picture yellow and black stripes, but this small bee is blue to blue-green. 🧵1/2

albertcardona, (edited ) to random
@albertcardona@mathstodon.xyz avatar

Yesterday I witnessed a behaviour I never expected from a solitary bee: she unloaded all its pollen baskets onto a leaf, then tasted it, and soon after flew off, releasing a cloud of pixie dust as she jumped and beat its wings down to take off. As if she had had a change of heart, and the pollen wasn't good enough?

Lasioglossum sp. https://www.inaturalist.org/observations/183728376

albertcardona,
@albertcardona@mathstodon.xyz avatar

To be clear, I have never seen a bee unload its pollen baskets—ever. This they only do deep inside their nests to provision a new cell for an egg. And I say this having photographed thousands of solitary bees over the last 5 years.

albertcardona, to random
@albertcardona@mathstodon.xyz avatar

Busy native bee with a large stash of yellow pollen under its abdomen. Looks like pixie dust.

Armored resin bees, Heriades sp. http://www.inaturalist.org/observations/181792663

clarebee, to nature
@clarebee@mastodon.green avatar

A stone wall feels like an entire ecosystem unto itself!

An estimated 5000 miles (8000 km) of walls in the , they're so familiar to me, the boundary lines of my childhood and now for the adult who has returned.

albertcardona, (edited )
@albertcardona@mathstodon.xyz avatar

@clarebee

How beautiful. In a very different place, Hvar island, Croatia, there are many stone walls – as a way to keep the soil stone-free for cultivation. The stones have many holes and crevices, and are a favourite home to native bees like from the genera Nomioides and Hylaeus. These are very small solitary bees, at 3 and 4 mm in length respectively.

Masked bee, Hylaeus sp. https://www.inaturalist.org/observations/178489996

Nomioides sp. https://www.inaturalist.org/observations/178452784

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